Description: Recycling means the worker process that handles requests for that application pool is terminated and a new one started. This is generally done to avoid unstable states that can lead to application crashes, hangs, or memory leaks.
Step 1: Go to Websites & Domains.
Step 2 : Then select the option Dedicated IIS Application Pool for Website.
Step 3: Click on REcycle for recycleing IIS application pool and then click on OK.